My british family : Derek. I have no idea whether it was common in his time or not, it just strikes me as odd.

My french family : (a ton of quirky old frenchie names in there. I feel like I have to specify whether they are male or female names though, it might not always be obvious)
Felicienne (F)
Eugenie (F)
Etienne (M)
Marcel (M)
Kleber (M)
Fernand (M)
Leon (M)
Mamers (M)
Marceline (F)
Modeste (F)
Fréjus (M)
Onésime (M)
Candide (M)
Isidore (M)
Edmé (M)
Simone (F)
Henriette (F)
Emile (M)
Emilia (F)
Celina (so pretty and delicate... i'm thinking of using some version of this for a daughter some day)
My father, Serge. Although the name was common around the time he was born in France, I've never heard anyone mention it on english speaking forums. It's also the name of a type of fabric
Special mention to my brothers Ernest and Eloi